Didn't handle preflight request correctly

[TrickyPi]

Bug report

Didn't handle preflight request correctly, if browser send a CORS non simple request to get a static resource.

Actual Behavior

Occur a CORS error.
The specific info:
Response to preflight request doesn't pass access control check: It does not have HTTP ok status.

Expected Behavior

Request successful

How Do We Reproduce?

1. type npx ll-create create react-js bug-reproduce command in terminal
2. cd bug-reproduce
3. yarn && yarn start
4. open google.com in browser, type fetch("http://localhost:{port}/",{headers:{"another-header":"1"}}) in devtool

Please paste the results of npx webpack-cli info here, and mention other relevant information

System:

• OS: macOS 11.5.2
• CPU: (8) arm64 Apple M1
• Memory: 131.83 MB / 8.00 GB

Binaries:

• Node: 16.13.1 - /usr/local/bin/node
• Yarn: 1.22.15 - /usr/local/bin/yarn
• npm: 8.1.2 - /usr/local/bin/npm

Browsers:

• Chrome: 97.0.4692.71
• Safari: 14.1.2

Other relevant information

• webpack version: "5.66.0"
• webpack-dev-sever version:"4.7.3"

[alexander-akait]

PR welome

[nickdeakin]

Alans change fixes this issue